Possible to get reference to book that opened Book Menu?

[XJDHDR]

I have a mod that marks books that the player has read and I'm trying to find ways to improve the mod. While browsing the Creation Kit wiki, I noticed that you can use the command "RegisterForMenu("BookMenu")" to receive an "OnMenuOpen(String MenuName)" event whenever the player reads a book.

Currently, I detect the player reading a book by attaching scripts with an OnRead event to books on the ground and attach a script to the PC with an OnObjectEquipped event.

Does anyone know a way to get a reference to the book that opened that Book Menu from that OnMenuOpen event? If there is a way, that would greatly simplify my mod's scripting.